Noun
1 Violent masturbation session, particularly when depressed or hungry.
2 Vigorous post-workout masturbation in any gym's changing room or showers.
Verb
To bring ones' self or another male to orgasm following, or sometimes during, a workout in the gym
- "I've really worked up a sweat on the treadmill, I'm gonna go tonk in the
showers while my hands are still naturally lubed up".
- "Alright mate, fancy a quick tonk to relax after pumping these weights?" (N.b:
the verb "to pump" is often used as a double entendre as it can refer to both
weight-lifting and intense masturbation, hence rendering superfluous the use
of the actual word "tonk").
- "God, I hate having to clean these showers. So many guys tonk themselves
silly after they've finished working out, some of them leave a right mess!".
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